How do you build a space/repair yard ship?

[Sinapus]

Originally posted by rdouglass:
The stock game wants you to use 'em as transports and not support vessels 'cause of the tonnage available at the lower tech levels (vs. standard hulls).

I threw in some penalties for those hulls. Mainly combat defense/offense penalties. I see the transport hulls as "civilian" hulls, mainly. I modified the supply storage components with 0 cargo space as well to build tankers. (Which tend to die rather quickly if they start too close to enemy ships in tactical.)